Comp spring seat post SP-S01The XLC seat post has got a deflexion of 40 mm and affords choice comfort. The spring tension can be adjusted. It is made of 6061-T6 aluminium with forged head. It is available in black, with a diameter of 27.2 and a length of 350 mm. The excellent value for money has also been confirmed by the magazine Trekking Bike 4/2010, after winning a comparative test!